Diff

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mod_reload_components/mod_reload_components.lua	Mon Nov 21 16:18:32 2016 -0200
@@ -0,0 +1,40 @@
+module:set_global();
+
+local configmanager = require "core.configmanager";
+local hostmanager = require"core.hostmanager";
+
+local function reload_components()
+
+        --- Check if host configuration is a component
+        --- @param h hostname
+        local function config_is_component(h)
+            return h ~= nil and configmanager.get(h, "component_module") ~= nil; -- If a host has a component module defined within it, then it is a component
+        end;
+
+        --- Check if host / component configuration is active
+        --- @param h hostname / component name
+        local function component_is_new(h)
+                return h ~= "*" and not hosts[h]; -- If a host is not defined in hosts and it is not global, then it is new
+        end
+
+        --- Search for new components that are not activated
+        for h, c in pairs(configmanager.getconfig()) do
+            if config_is_component(h) and component_is_new(h) then
+                module:log ("debug", "Loading new component %s", h );
+                hostmanager.activate(h, c);
+            end
+        end
+
+        --- Search for active components that are not enabled in the configmanager anymore
+        local enabled = {}
+        for h in pairs(configmanager.getconfig()) do
+            enabled[h] = true; -- Set true if it is defined in the configuration file
+        end
+        for h, c in pairs(hosts) do
+            if not enabled[h] then -- Deactivate if not present in the configuration file
+                hostmanager.deactivate(h,c);
+            end
+        end
+end
+
+module:hook("config-reloaded", reload_components);